Monostable permanent magnetic actuator using laminated steel core

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(11)

EP 2 204 825 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	19.11.2014 Bulletin 2014/47

(43)	Date of publication A2:
	07.07.2010 Bulletin 2010/27

(21)	Application number: 09179272.1

(22)	Date of filing: 15.12.2009

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International Patent Classification (IPC):

H01F 3/02^(2006.01)

H01F 7/16^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
	Designated Extension States:
	AL BA RS

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Priority:

31.12.2008 KR 20080017509 U

(71)	Applicant: LS Industrial Systems Co., Ltd
	Dongan-Gu Anyang, Gyeonggi-Do (KR)

(72)	Inventor:
	Sohn, Jong-Mahn Cheongju, Chungcheongbuk-Do (KR)

(74)	Representative: Lang, Johannes et al
	Bardehle Pagenberg Partnerschaft mbB Patentanwälte, Rechtsanwälte Prinzregentenplatz 7 81675 München 81675 München (DE)

(54)	Monostable permanent magnetic actuator using laminated steel core

(57) A monostable permanent magnetic actuator using a laminated steel core, comprises: lamination cores formed as a plurality of metallic thin plates are laminated to each other; a coil disposed to be adjacent to the lamination cores, and configured to apply a magnetic force to the lamination cores by an external power; a mover mounted in the lamination cores so as to be movable in upper and lower directions; permanent magnets installed at the lamination cores, and configured to apply an upward and downward magnetic force to the mover; and an elastic means configured to apply an elastic force to the mover in an opposite direction to the permanent magnets.

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